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Research Article

Stoichiometric effect on electrical and near-infrared photodetection properties of full-composition-range GaAs1-xSbx nanowires

Jiamin Sun1,2,§Mingming Han1,§Meng Peng2,3,§Lei Zhang4,§Dong Liu1,2,§Chengcheng Miao1Jiafu Ye2,5Zhiyong Pang1Longbing He4( )Hailu Wang2Qing Li5Peng Wang2Lin Wang2Xiaoshuang Chen2Chongxin Shan6Litao Sun4Weida Hu2,5( )Zai-xing Yang1,2( )
School of Physics and School of Microelectronics Shandong UniversityJinan 250100 China
State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics, Chinese Academy of SciencesShanghai 200083 China
Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074 China
SEU-FEI Nano-Pico Center Key Lab of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast UniversityNanjing 210096 China
School of Physics and Photoelectric Engineering Hangzhou Institute for Advanced Study, University of Chinese Academy of SciencesHangzhou 310024 China
Henan Key Laboratory of Diamond Optoelectronic Materials and Devices School of Physics and Engineering, Zhengzhou UniversityZhengzhou 450001 China

§ Jiamin Sun, Mingming Han, Meng Peng, Lei Zhang, and Dong Liu contributed equally to this work.

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Abstract

As one of the most important narrow bandgap ternary semiconductors, GaAs1-xSbx nanowires (NWs) have attracted extensive attention recently, due to the superior hole mobility and the tunable bandgap, which covers the whole near-infrared (NIR) region, for technological applications in next-generation high-performance electronics and NIR photodetection. However, it is still a challenge to the synthesis of high-quality GaAs1-xSbx NWs across the entire range of composition, resulting in the lack of correlation investigation among stoichiometry, microstructure, electronics, and NIR photodetection. Here, we demonstrate the success growth of high-quality GaAs1-xSbx NWs with full composition range by adopting a simple and low-cost surfactant-assisted solid source chemical vapor deposition method. All of the as-prepared NWs are uniform, smooth, and straight, without any phase segregation in all stoichiometric compositions. The lattice constants of each NW composition have been well correlated with the chemical stoichiometry and confirmed by high-resolution transmission electron microscopy, X-ray diffraction, and Raman spectrum. Moreover, with the increase of Sb concentration, the hole mobility of the as-fabricated field-effect-transistors and the responsivity and detectivity of the as-fabricated NIR photodetectors increase accordingly. All the results suggest a careful stoichiometric design is required for achieving optimal NW device performances.

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Nano Research
Pages 3961-3968
Cite this article:
Sun J, Han M, Peng M, et al. Stoichiometric effect on electrical and near-infrared photodetection properties of full-composition-range GaAs1-xSbx nanowires. Nano Research, 2021, 14(11): 3961-3968. https://doi.org/10.1007/s12274-021-3321-3
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Received: 10 September 2020
Revised: 05 November 2020
Accepted: 11 January 2021
Published: 13 March 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021
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